Serratopses are quadrupedal, herbivorous reptiles the size of Ancient rhinoceroses. Bony spurs line their backs, and 3 ridged, blade-like growths adorn their snouts and neck-frills.

Those sliced by any 2 of a serratops' blades in a single combat round acquire the Hemophilia mutational drawback. Serratopses themselves are immune to this effect (as their blood contains a hyper-coagulant), but their bodies are scarred from courtship rituals and simple accidents.